Please welcome a new WebStorm 2016.3 EAP build (163.4830)! You can download it here, or if you have the previous EAP build (163.4396) from the last week installed, you should soon get a notification in the EAP about a patch update.

Integration with Stylelint

WebStorm adds integration with Stylelint, a code quality tool for stylesheets. You can now see the errors reported by Stylelint right in the editor.

To get started, install Stylelint globally or locally in your project via npm, add .stylelintrc file with the Stylelint configuration and then enable the integration in Preferences | Languages & Frameworks | Stylesheets | Stylelint. That’s it! Stylelint errors will be shown in the editor. Hover over the highlighted code to see the error description.

Find usages for ES6 default exports

You can now find usages for default-exported functions or classes: press Alt-Cmd-F7 on OS X or Ctrl+Alt+F7 on Windows and Linux on the export to see usages in a popup or press Alt-F7 to see usages listed in a tool window.

Updated Angular 2 code snippets

Angular 2 has been finally released, yay! We’ve updated the collection of the Angular 2 Live templates in WebStorm to comply with John Papa’s recommendations.

In addition, we’ve fixed some issues with duplicates in import suggestions when using Angular 2.0.

TypeScript import can be shortened

A new inspection now warns you if an import statement in the TypeScript code can be shortened. That is very useful when you re-import all classes contained in a directory in the index.ts file.

For a detailed list of the issues addressed in this EAP build, please see the Release notes.

Please report your feedback to our issue tracker. To get notifications of new EAP builds as they become available, subscribe to the EAP channel in Preferences | Appearance & Behavior | System Settings | Updates.
– JetBrains WebStorm Team

I had problems opening any old projects as well as creating new projects. The index would happen and then the Project window either didn’t display or was un-openable.
Removing the old preferences from ~/Users/username/Library/Application Support fixed the issue

Any chance you can provide more information about your project structure and these index.@.js/css files? Or send a link to a similar project? We were not any to reproduce the issue so far. What Stylelint version do you have?